Universal Power Group UB12550 12V 55Ah Scooter Wheelchair Mobility Deep Cycle SLA AGM Battery UPG # 40740 UB12550 12V 55Ah Dimensions: 9.06 inches x 5.44 inches x 9.13 inches. Weight: 38.60 Lbs SLA/AGM maintenance free, spill proof battery Rechargeable battery that can be mounted in any position, resists shocks and vibration 1 Year Warranty